Retrospective Study
Copyright ©The Author(s) 2022.
World J Gastrointest Surg. Nov 27, 2022; 14(11): 1230-1249
Published online Nov 27, 2022. doi: 10.4240/wjgs.v14.i11.1230
Table 3 Chi-square analysis of the number of removed lymph nodes and patient characteristics in the pT1-pT4 subgroups in the Chinese training cohort
Characteristics
pT1 (1106), RLNs
P value
pT2 (745), RLNs
P value
pT3 (1583), RLNs
P value
pT4 (1534), RLNs
P value
≤ 12
13-25
≥ 26
≤ 17
18-30
≥ 31
≤ 19
20-38
≥ 39
≤ 16
17-44
≥ 45
Sex0.1140.8030.0060.132
Male112353320109274188230677240119851161
Female3115014032806273295684328674
Age (yr)< 0.0010.6990.0020.273
≤ 60743023238021415213752318382637138
> 606920113761140981664491258050097
Tumor location0.0030.2160.0360.025
Upper third17241917341554139363413726
Middle third14596817403763164682521145
Lower third112420373107280198186669204103789164
Tumor size (mm)0.0050.004< 0.001< 0.001
≤ 501394774171292871962025141478754981
> 504264312675410145816175588154
Histological type0.0080.6890.8780.145
Well-moderately differentiated67273229671601041253781167339173
Poorly-undifferentiated391531586314811312242614175631135
Signet ring cell14364362417361133275712
Others2341305221620551975815
pN stage< 0.0010.128< 0.001< 0.001
pN01254337485195127112241625422037
pN115494532805786206544124022
pN23222821504068237644227543
pN30213329263728812825402133
pTNM0.0140.045< 0.0010.003
I14047941985195127000000
II3244053130971984471164320131
III00132926105525192119936204